TEACHER LESSON PLAN AND ANSWER KEY

LESSON 2 – Double Bar Graphs

Teacher will need:

o  Copies of the student worksheet

Students will need:

o  Ruler

o  Pencil

Activate Students Interest:

o  Talk as a class about some of the things that the farmer said he took into consideration when deciding what to plant on a certain field. See how many things you can remember as a class.

o  Read the introduction paragraph as a class.

Students Acquire Knowledge:

o  Work with the students to be able to identify the different parts of a double bar graph. (you may have already done this, so the students worksheet will just serve as a refresher.)

o  Work with students so they know how to apply information into a double bar graph. You may want to do this by working through example on their worksheet. (if you have already covered this in class, the worksheet again will serve as a refresher)

Apply Students Knowledge:

o  Ask students to complete the student worksheet.

Student Worksheet Answer Key

1. b 5. a

2. c 6. c

3. b 7. d

4. b 8. b

Name: ______

When farmers are trying to decide what crop to plant on a certain piece of land they look at the nutrients available in the land. Ideally, farmers will pick a crop that has nutrient requirements that are close to what is already in the field. That way farmers will not have to apply as much fertilizer.

Let’s find out what the farmers are going to plant for East Selkirk School this year.

The table below shows you how much of each nutrient is needed by 5 different crops. Transfer the information from the table to the proper graph below to fill in the second of the bars on the graph. The wheat example has been done for you.

CROP REQUIREMENTS / Nitrogen / Phosphate / Potash / Sulphate
Wheat (Prairie Spring) / 80 / 30 / 20 / 15
Soybeans / 0 / 35 / 45 / 20
Oats / 60 / 40 / 20 / 15
Corn / 110 / 30 / 90 / 20
Canola / 80 / 40 / 60 / 20

Once you are done, you will have to use your graphs to answer the questions at the bottom of the page.

  1. What is a double bar graph used for?
  2. For comparing the amounts for one set of data.
  3. For comparing the amounts for two sets of data.
  4. For showing how data changes over time.
  5. Uses pictures or symbols to show data.
  1. What is the title of the graphs above?
  2. Nutrients
  3. Pounds per acre
  4. The name of the crops
  5. Potash
  1. What is the label on the horizontal (x) axis of these graphs?
  2. Sulphate
  3. Nutrients
  4. Crop Requirements
  5. Pounds per acre
  1. How much does the scale go up by?
  2. 5
  3. 10
  4. 50
  5. 120
  1. What do the black lines of the graphs represent?
  2. Nutrients in the Field
  3. Crop Requirements
  4. The kinds of crop it is
  5. The number of acres
  1. Which crop requires the most nitrogen to grow well?
  2. Canola
  3. Wheat
  4. Corn
  5. Soybeans
  1. Based on the graphs which crop would be the worst crop to grow on this particular piece of land? (Which crop requires the most nutrients as compared to what is already in the soil?)
  2. Wheat
  3. Soybeans
  4. Oats
  5. Corn
  1. Based on the graphs, which crop would be the best crop to grow on this particular piece of land?
  2. Canola
  3. Soybeans
  4. Wheat
  5. Oats

Getting the correct answer to question 8 will let the students know what kind of crop the farmers are going to grow. Soybeans will be the crop that is being planted this spring.